Computation of Basic/Diluted Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Schedule of computation of earnings per share

The following table sets forth the computation of basic and diluted earnings per common share (amounts in millions, except per share data):

	For the Three Months Ended March 31,
	2017		2016
Numerator:
Consolidated net income	$	426	$	363
Less: Distributed earnings to unvested share-based awards that participate in earnings	—		(2		)
Less: Undistributed earnings allocated to unvested share-based awards that participate in earnings	—		(1		)
Numerator for basic and diluted earnings per common share—income available to common shareholders	$	426	$	360
Denominator:
Denominator for basic earnings per common share—weighted-average common shares outstanding	749		735
Effect of potential dilutive common shares under the treasury stock method:
Employee stock options and awards	12		14
Denominator for diluted earnings per common share—weighted-average common shares outstanding plus dilutive common shares under the treasury stock method	761		749
Basic earnings per common share	$	0.57	$	0.49
Diluted earnings per common share	$	0.56	$	0.48